Help what is this?!?

Aj💜💙💙

My daughter complained about her cheek hurting AFTER we already left the dr office and she is on an antibiotic for an ear infection..

Does anyone know what this is?

Or what I can do to help it get better?

**I already messaged her Dr. just trying to get advice in the mean time because its got me freaked out. Mom guilt is awful how haven’t I noticed this 😭😭**